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KMID : 1143420160090090154
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Public Health Weekly Report
2016 Volume.9 No. 9 p.154 ~ p.158
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The relationship of pathogenic Vibrio spp. with marine environmental factors, Korea, 2013-2015
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Na Hae-Young
Hong Kyu-Rak
Chung Gyung-Tae
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Abstract
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Background: Vibrio spp. is one of the water- and food-borne pathogens that can infect humans. It could be a serious pathogen found in Korea which is surrounded by marine environment. For this reason, we investigated the prevalence of three pathogenic Vibrio spp. (V. vulnificus, V. parahaemolyticus, V. cholerae) and their relationship with marine environmental factors in Korea.
Methodology: Seawater samples were collected from three points of quarantine areas related to the four environmental factors (temperature of seawater and atmosphere, salinity and pH).
Collected waters were filtered and incubated in APW at 37℃ for 24 hours. Screening of Vibrio spp. was performed with PCR method using species-specific genes (tlh, vvhA, hlyA). Three years (2013-2015) of data was analyzed by linear regression to calculate the coefficient of determination (r2). The relationship between screened Vibrio spp. and environmental factors was evaluated by the coefficient of correlation.
Results: Pathogenic vibrios were screened from 2,220 specimens (seawater) by PCR method during the period 2013-2015. V. parahaemolyticus (1,548, 69.7%) was the most prevalent species, followed by V. vulnificus (568, 25.6%) and V. cholerae (406, 18.3%). Among the environmental factors, temperature of seawater showed strong correlation with V. vulnificus (0.91) and V. parahaemolyticus (0.90).
Conclusion: Laboratory surveillance of pathogenic marine Vibrio spp. must be continued to accurately assess risks related to global climate change.
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KEYWORD
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